Grid Definition

<EjsGrid DataSource="@Persons" ModelType="@TestType">
            <GridColumns>
                <GridColumn Field="@nameof(Person.ID)" HeaderText="@nameof(Person.ID)"></GridColumn>
                <GridColumn Field="@nameof(Person.Name)" HeaderText="@nameof(Person.Name)"></GridColumn>
                <GridColumn Field="@nameof(Person.Surname)" HeaderText="@nameof(Person.Surname)"></GridColumn>
                <GridColumn Field="@nameof(Person.AdditionalData)" HeaderText="@nameof(Person.AdditionalData)">
                    <Template>
                        @{
                            var person = context as Person;
                            var additionalDataStrings = person.AdditionalData.Select(kvp => kvp.Key.ToString() + "=" + kvp.Value.ToString());
                            <p>
                               @string.Join(";", additionalDataStrings);
                            </p>
                        }
                    </Template>
                </GridColumn>
            </GridColumns>
        </EjsGrid>